Jon is still around but, apparently, he's on hiatus because of some personal issues. In addition, the chip shortage has also interrupted his service. He still chimes in here once in a while.
You're right. On the other hand, Jon's was (or is) an excellent piece of electronics. I did no special testing but anecdotally, it appeared to only use about 15-20 minutes of battery power over a full day's use. If Uniden would (or could) use Jon's design, they might have something. I don't know if he got a patent for it. Besides electronics, Jon had also "interests" other than electronics which may be consuming his time now.IDK, have you seen how inefficient their “current” GPS solution is for this radio? Just awful.
Wonder if this could be wired to use power from and feed data into the USB ports on side of SDS100 ?It was a module from Reyax the RY825 that are no longer available. They have the $30 RY826 but don't know it that will fit. It seems to be useable with its default settings. RY836AI | REYAX TECHNOLOGY 爱联智科技
Amazon.com: REYAX RY836AI 10Hz USB GPS Glonass BeiDou Antenna Module Pressure Compass Gyro sensors : Electronics
Those leads goes on the circuit board to other components that are easier to solder to. Sometimes there's a capacitor for each pin and sometimes protection diodes and at other times the actual IC that handle the USB signaling have bigger copper surfaces to use. Take out your multimeter and check for a 0 ohm connection from the pin.I can't find anybody local that can solder such microscopic leads (On the USB)